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3 years ago

body starting from rest and moving with an uniform acceleration of 3 m/s²..What is its velocity after 15s?

Physics

2 answers:

Luba_88 [7]3 years ago

7 0

<h2>Answer :</h2>

□ The Final velocity of body = 45 m/s $\sf{ }$

<h2>Given :</h2>

Initial velocity of body = 0 m/s

Acceleration of body = 3 m/s²

Time taken by body = 15 sec

<h2>To Calculate :</h2>

Final velocity of body = ?

<h2>How To Calculate ?</h2>

Here in this question we are provided that a body is in rest so it's initial velocity will be 0 m/s (because from rest), Acceleration of body is 3 m/s², and Time taken is also given which is 15 sec.

To calculate the Final velocity of body we'll use the first equation of motion which says v = u + at

Where,

v is the Final velocity in m/s.

u is the Initial velocity in m/s.

a is the Acceleration in m/s².

t is the Time taken in second.

<h2>Calculation :</h2>

From first equation of motion

⇒ v = u + at

⇒ v = 0 + 3 × 15

⇒ v = 0 + 45

⇒ v = 45

Hence, the Final velocity of body is 45 m/s.

Brilliant_brown [7]3 years ago

6 0

Velocity after 15s is how i isiah’s also is syrah a sustainable suway age is yah dust susi

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Paha777 [63]

The specific heat capacity of the calorimeter used in mixing the water is determined as 21.87 J/g⁰C.

<h3>Conseervation of energy</h3>

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<h3>Specific heat capacity of the calirometer</h3>

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The complete question is below

When using a different calorimeter, and mixing 50 ml of hot water at

65 degrees C with 60 ml of water in the calorimeter at 25 degrees C, the temperature of the calorimeter increased by 5.5 degrees C.

a. Calculate the heat capacity of this calorimeter?

Learn more about heat capacity here: brainly.com/question/16559442

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